Adding-machine.



R. H. LITTLE.

ADDING MACHINE.

APPLICATION FILED 1120.15, 1910'.

l,O"/O,146 Patentad Aug. 12, i913.

2 SHBETSWSHEET 1,

R. H. LITTLE.

ADDING MACHINE.

APPLICATION FILED 1326215, 1910.

"1,070,146, Patented Aug. 12, 1913.

2 SHEETS-SHEET 2.

nnrnnisramnsraranr ernten.

,ROBERT H. LITTLE, OF CHICAGO, ILLINOIS, ASSEGNOR T0 MAURICE H. MANDELBAUM,

OF CHICAGO, ILLINOS.

ADDING-MACHINE.

Application led December 15, 1910.

To all whom, t may concern.'

Be it known that I, Roemer H. LITTLE, a citizen of the United States, residing at Chimigo, in the county of Cook and State of lllinois, have invented certain new and useful lmproveinents in Adding-Machines, of which the following is a specification.

My invention relates in general to adding machines and more particularly to small sized machines which are adapted to be readily and easily moved about on a desk or table and carried from desk to desk as occasion requires.

One object of my invention is the provision of an adding machine of the character indicated which shall have but a single value member or operating member, said member being so constructed and mounted that. it is capable of variable actuating movements depending upon the number to be set up.

Another object is to so connect the variably movable value member with the number Wheel that operative movement of the value member will cause a'proportionate shifting movement of the. number wheel.

Still, another object is the provision of mechanism for preventing overthrow of the number wheel beyond the proportionate shifting movement imparted to it by the value member.

A. further object is to provide means for retaining the number wheelk in shifted position during the return of the value member to normal position, and releasing means for disconnecting said retaining means to per mitthe resetting of the number wheel.

An additional object is to produce a machine which shall be small, light, simple in construction, cheap to manufacture and easy to operate, and at thesame. time strong, durable, accurate and efficient in its operation.

vOther objects and advantages of my invention Will be apparent as it becomes better understood by reference to the following description when taken in connection with the accompanying drawings illustrating one preferred embodiment thereof.

eferring to the drawings-Figure 1 isl a plan view of an adding machineiembodying my invention. F 1g. 2 1s an elevation thereof'partially in section. Figz isla View similar to Fig..1 with the top plate removed '.to more clearly show the operating Specification of Letters Patent.

Patented Aue'. 12,1915.

Sen'ai No. 597,435.

mechanism. Fig. 4 is a fragmentary view ofthe number wheel retaining and releasing devices. Fig. 5 is a detail view of certain parts shown in F ig. 11 looking at the bottom thereof; and Fig. 6 is a sectional view on the line 6*@ of Fig. 1 showing in dotted lines the overthrow stop in operative and in full lines in inoperative position.

On the drawings 10 'designates the bed or base of the machine which is preferably circular in shape and has centrally mounted thereon a vertically disposed rotatable shaft 11 carrying a circular number Wheel 12. The number wheel is provided 'around its periphery with serrations or radially disposed teeth 13 and its upper face has arranged thereon in proximity to the spaces between the adjacent teeth, numbers ranging consecutively from zero to 99 inclusive. A stationary plate 14 positioned above the number wheel has a notch 15 on its edge disposed over the numbers on the wheel', the various parts of the machine being so arranged that the number Zero is visible in this notch when the parts are in normal position and the, total ofithe various numbers added is displayed and read at this position.

A semi-circular plate 16 may be employed to cover the operating mechanism of the machine and provide a bearing for the )upper end of thesha-ft 1l, although it Will be evident that the shaft may be otherwise mount- Ved and the various parts maybe covered and protected in any other preferred manner or left exposed if desired. s

An operating member or value member 17 comprises a lever fulcrumed to swing in an arc about the shaft 11-and a plate-projecting laterally from the arm and having its outer edge provided with a series of notches 18. The plate is proyided with a'series of numbers ranging from l to 9 inclusive, arranged consecutively adjacentA the notches, nine in number, formed on the outer edge of the plate, and this notched edge is disposed at an angle to the adjacent radial edge of the stationary cover plate 16 so'that `when the value member is in normal position the notch numbered -1 is nearest the edge of the plate, and the notch`numbered 9 is farthest from said edge, asshovvn in Fig. 1. The value member is normally-held in the `position shown in Figs. 1 and 3 by atension spring 19 attached at one endrto astudQO'Xed on bei,

over the ente? ends of the teeth i3.

the base l() and et its other end 2l pojeeting from the veine nievntie its uloruni 1L A ptn 22 entre :t Cover-23 of rubber on ottiev' niet is disposed between the to omn butter egeinst which the of' the operating membeiebnts it is 'etnrned to noifne position by the tension spring 19. The viedingeovei is provided fon: the purpose of reducing the noise end shocks incident to the operation of the .new chine.

Neer the oute: end of the leven portion of the operating oi veine member l?, them is pivoted et 24e e pew ,25 which is yeidingiy 'tinged into engagement with the teeth. 3,3 en the numbei' vvheet by e 1seonted to the undevside ofthe veine meinten Si? and. having its `tee end positioned to prese against e, pin 2t piojeeting nteinity tem the upper side ost the pevfl 9.5, tit Witt be evident that when the veine member is moved about the vertical shaft il in e oonntenciookvvise dii'eetion looking et Figs., l end 3, the pevf 25 Witt engage with one of the teeth en the peri-phony the nannten wheeiend rotate the numbet' Wheel about exis e distenee equal to the movement of the l veine or operating member. 'When the operating member is reiensed it vlii 'te ten turns to normal position egeinet-tiie stop or "bltter 22 oy the tension spring i9? the pevvi 25 on this eetnz'n movement siiding tn odel to pevent beolmveid rotation ot the number Wheel npon the etnz'n movement et the operating ineinbei, a hoiding pewi 28 is pto vided 'which is pivoteliy mounted et 29 on the elevated bottoni 3C* ot the bese of the machine. This pend ne eno-wn in Figs. 4+ and 5 is disposed beneath and edgiecent to the peiipheiy ot the number Wheel and is provided with e laterally progeoting tooth oi shoulder 31 which is inoined nele-tively to the teeth on the nnmbe wheel to permit the numbei wheeto te shifted in e oionnteictoekwiee direction but to engage vvith the reef fece of the teeth i3 and prevent Tooele Werd movement of the number vvhee when tlie pend 25 is disengeged therefi'on upon the return movement of the opeeting mem- Tiie pew). 28 is yietdingly urged into engagement with the numbez' Wheet by o sp1-ing 32 fastened to the elevated bese 30 and having its tree end disposed to pi'ese against the ontet fece of the pend? and yield' ingiy maintain the seme in ope'etive Jposition, The invvnrd movement of 'the pnvvt 28 is iznited by' the ebutn'lent 32.

tn onder to permit the number Wheel to be returned to normal position neve lotovided e devine tot smnttnneousty' disengeging, pevvis 25 and 28 from engagement with the teeth t3. This device oompniees e meinten 33 nivotely mounted "nevfingen 35 adapted, bei 3s m noinet positionj to engege bemind the 2? "which Aprojects letevey from the Ipevvt 25. f pin 36 which l: beve shown on the dewingein the form et e. sevevv pi'ojeets npvvady through n sot in the teinte 16, the slot being ehnped to permit e Slight move- .nent ofthe pin 36 in en entvverd direction sutf'oient to took the'pttvvl 25 en its pivot and vvitndvevv the free end theieot ont ot en gegement with'v the teeth on the number Wheei.- The 'pin 27 entends through the pewt end projettent the opposite side thereof as shown in 5, end the free ond of the pevfl 28 is provided with e 'lnger- Whih overlaps and vente eeeinst 'the pin 2?. @fi/len the W1 25 is withdrawn from enge-gement `vvitn the teeth on tile numbex Wheet es previously deeeiibed, the-pin' it? Witt move the tree end 'of the pevvl 28 entoienty to disengnge the shonider or tooth 3l tem the teeth i3 thereby pemitting the Anumber wheel to oe voteted in e otookvvise diveotion beek to normal position. The retum or resetting 'movement of the number' Whee is eoeompiistied by e eoii spring' which tine its inner end. etteehed to the .shaft t1 et 39 sind its outer end secured. et foto one end ot the poets of the treme el in which tine lower end of the shaft il is mounted. The shaft 1t is equipped et its upper end with e, knuiied button or heed by Ineens ot. which the number vv-*neet nitty be manually returned to normzd position it desited.

The machine is operated by means ot e,- pen'cii or other similar instrument which may oe engaged in the notch 18 Corresponding to the numbet which it s desiied to eet up. The pencil is then moved, carrying 'with it the veine member or opei'eting meni- 'oer l?, until the pencil strikes against the .adjacent redini edge of the oo v'enpiate 16.

t Witt' be evident that the distalnoe that the pencil travels nefote' stviizing the edge of the plete 16 will dependupon which of the notches 18 it is engaged with, the notch, of course, being determined by the number which it is desired to setup. The goew 25, es has been previously described, is normalty engaged with e, tooth ot' the number' Wheel and operative movement of the veine eev member will, through the instrumentality' of this pavvl, rotate or shift the numbervvineel e. distance propo'tionate to the movenient of the value member, thus upon snoeessive movements ot the velue member, bringing the total ot the 'numbers 'adjacent the notches, which `have been engaged by the pencii during the operative movements, into view beneath the notch i5 in the plate le. For instance, i' en instrument is en.

geged in the noten ndjeeent the numeral 4 end-tnevetne member 'te depressed until vthe teo instrument strikes the edge of the plate 16, the numeral 4 on the number wheel will be shifted to position beneath the notch 15. If upon the next actuation the instrument is engaged with the notch adjacent the number 7 on the value member and the value meinber is depressed until the instrument engages the plate 16, the number wheel will be rotated' or shifted seven numbers or Sutilciel :ly to bring the numeral 11 on the number wheel beneath the notch 15. It will be evident that long columns of single tig'ures may thus be added and the total displayed to the operator. It willalso be evident that it' it is desired to start out with a number consisting of two figures such as 22 for instance the pencil or instrument may be inserted in the space between the teeth 13 on the number' Wheel adjacent the number 22 and the wheel may be rotated in a counter# clockwise direction until' the pencil engages the edge of the plate 14 adjacent the notch 15, thereby shittingV the number Wheel to bring' the numeral 22 into View beneath the notch 15.

A hundred wheel 43 provided With spaced teeth 44 and having on its upper face numerals ranging: Jfrom 1 to 9 inclusive, is rotatably mounted beneath the plate 16 so that the numbers may bc successively displayed through an opening in the plate. Upon the shaft 11 adjacent the hundred wheel there is iXedly secured a disk etti provided with a tooth 47 adapted to engage between adjacent teeth 44 and impart a rotative movement to the hundred wheel. When, in the operation of the `machine, the number wheel completes one revolution, the hundred wheel ismovcd one space to bring the numeral 1 beneath the opening' 45 by engagement ot' the tooth 4T with a` pair of the teeth 44. llach revolution of the number wheel will'. impart a corresponding 1noye- -inent to the hundred wheel in the usual manner. Upon rotation of the number wheel in a clockwise direction to n ormal position, the tooth 47 is brought into engagement with a blank 48 on the hundred Wheel, as shown in Figs. l and il, whereby said rotation of thc number wheel beyond normal position is prevented.

vIn order that upon actuation. of the value or operatingr member the number wheel may not be carried by its inertia beyond its proportionate movement relative to the value member. l have provided a stop or overthrow mcchanism which is thrown into 0pcration tostop the movement of the number wheel when the value member reaches the limit ot' itsl operative movement. The stop proper consists of a pin .49 projectinglr l \'vnw:i1' ll,v from a lover 50 fulcrumed at 5l and connected at. 52 with a recip'rocatory member '53. 'Itho pin 49, when .the lever 50 is moved on its -fulcrum to the position pins 56 and 57 projectingV downwardly from the cover plate 1G engage in the slots 54: and 55, respectively, and guide the reciprocatory member 1n its longitudinal movement. A.

vtension sprint7 58 secured at one end to a. pin

59 on the elevated base of the machine and at its other end to the lever 50 retains the reciprocatory member and the stop lever normally in the positions shown in Figs. 1 and 3. ln this position of the parts the elongated edge of the reciprocatory'member adjacent the value member projects slightly beyond the radial edge of the cover plate 1G, as shown in Fig. 1. When, during the actuation of the value member, the pencil or other instrument which is engaged in one of the notches v18 approaches the radialedge of the cover plate it strikes against the elongated edge of the reciprocatory member and moves the same longitudinally thereby rockin eT the lever 50 upon its ulcrum and positioninsr the stop pin 429 between the 'number wheel teeth. This prevents overthrow ot' the number wheel beyond its required proportionate movement relative t-o the operating' member and insures the stoppage of the number wheel with the proper numeral in position beneath the visual slot 15. When the pencil or other instrument is removed the stop mechanism is returned to normal position by the spring 58.

From the above description it will be evi dent that the value or operating' member is moved a ditierent'distance before the operatintr implement engages the stationary cover plate 1G, depending upon which of the` lt will also be evident that overthrow of the number wheel is prevented by engagement of the operating implement with the reciprocatory member 523 and that return move ment of the number wheel with the value member is prevented by the latch Q8. After the column of figures has been added the number Wheel may be restored to normal position by pressing laterally upon pin 86 to withdraw pawls 25 and 28, as previously described.

While I have shown and described a pre.- ferred embodiment of my invention it will be obvious that various mechanical changes in the details of construction and in the size and proportion of the various parts may be. resorted to without ilepartinar from the the material advantages thereof.

lfhat l desire to clarin is:

l, ln an adeline; ma ine, 'the combination ot a number wheel, an oscillatory value memadapted to be moved varying amounts proportionate to the number to be set up, said member being' `provided alongone ot its edges at varying distances trom the center of oscillation ot the said member with a plurality of serrations adapted to be engaged by the operator to move the said member, means limiting the movement of the said member in varying amounts corresponding to the serra-tion engaged, and operative connections between 'the said member and the said wheel whereby the said wheel will be shifted an aggregated amount proportionate to the summation ot the 'varied movements of the said member.,

-2 in an adding' machine, the combination ot' a number wheel, an oscillatory value member adapted to be moved varying, amounts proportionate to the number to be set up, said member beine' provided with an outwardly extending' wins; disposed alone,` one side thereof and adjacent the outer end, said wine; being provided alone; its outer edge at varyingdistances from its inner edge with a plurality ot serrations adapted to be engaged by the operator to move the said member, means limiting the movement ot said member in varying amounts Correspondingil to the serration en rafael/and operative connections between the said member and' the said wheel whereby 'the said wheel will be shifted an aeg irrogate amount proportionate to the movement ot the said value member. I

3. in an addingLv machine, the combination of a number wheel, an oscillatory value member adapted to be moved varying amounts proportionate to the number to be set up, said member being' provided with an outwardly extending wingn disposed alongone side thereof and adjacent the outer end, said wing being provided along its outer edge at varying distances from its inner edge with a plurality ot serrations adapted to engaged by the operator to move the said member, means limiting the moven'ient oi' the member in varying amountscorresponding to the serations engagged, means on the said va ,N member adapted to engage with the wheel wherebytho propertionate to the movement or' the value member, and means adapted to be engaged the said wheel for preventing" move.- ment thereof in ss of the proportionate movement inip -,ed ti creto byv the value memberM iaehine, the combination 'l ci" l I oscillatory value i l be moved varying 1@nate the member to be he" i. with an vheei will be moved an amount` outwardlyextending wing disposed along one side tlfiereoie andadjacent the outer end, said wing being provided along its outeredge at varying distances from its inner edge with' a plurality of serrations adapted to be engaged by the'operator to move the said member, means limiting the movement of the said member in varying amounts corresponding to the serrations engaged, connection between said member and said wheel whereby the wheel will be moved il a positive direction at each actuation of the value member a distance proportionate to the travel of the said member, and means returning the said member to normal position after each actuation thereof.A Y y 5. lnvan 'adding machine,"t`he combination of a number wheel, an oscillatory value member adapted to, be moved varying amounts proportionate to the number to be set up, said member being provided with an outwardly extending wing disposed along one side thereoia and adjacent the outer end, said wing being provided along-ens outer edge at varying distances from the inner edge with a plurality of serrations adapted to be engaged by the operator to move the said member, means limiting the movement of the said member in varying amounts corresponding to the sei-rations engaged, connections between said member and said wheel whereby the wheel will be moved in a positive direction at each actuation of the value member a distance proportionate to the travel or" the said member, means re turning the said member to normal' position after each actuation thereof, and means for locking the said 'wheel against return movement. f

6 ln an adding machine, the combination ot a housing, a number` wheel havingv a plu rality of serrations disposed about its periphery, a value member adapted to be moved varying amounts proportionate to the number to be set up, operative connections between said wheel and said memberwhereby the wheel will be moved in amount proportionate tothe movement of the value member at each actuation thereof, means normally out of engagement with the said wheel adapted to be engaged therewith by movement of the said value member to pre. vent movement ofthe wheel in excess of the movement imparted thereto, said ,means comprising a member loosely mounted on the said housing, a. pin adapted to engage one of the said sei-rations, means connecting the said pin to the said member, and yielding means holding the `said pin normally out of engagement with the said wheel.

7. ln van adding machine, the combination oi' housing, a number wheel having a pl'urality ot serrations disposed about its peripher a value member adapted to be moved in varying amounts proportionate to the number to be set up, operative connections between the said member and the said wheel whereby the said wheel will be moved an amount proportionate to the movement of the value member at each actuation thereof, and means normally out of engagementI with the said wheel and adapted to be en- ,gaged therewith for preventing movement of the vvheel in excess of the movement im-` parted thereto, said means comprising a lever having al pin at one end adapted to engage a serration on the periphery of the number Wheel, a spring normally holding the said pin out of engagement with the said ivheel, and a member adapted to actuate thesaid lever against the force of. the said spring, said member being connected to the said lever and loosely mounted Within the housing and adapted to be actuated by movement of the value member.

8. In an adding machine, the combination of ay number wheel, an oscillatory member adapted to be moved varying amounts proportionate to the'numbers to be set up, said member being formed at varying distances Copies of this patent may 'be obtained. for ve cents each, by addressing the Commissioner of Patents.-

from its center of oscillation to be engaged by the operator to move the said member, and an operative connection between the said member and Wheel whereby the said wheel Will be shifted an aggregate amount proportionate to the summation of the varying movements of the oscillatory member.

9. In an adding machine, the combination of a number Wheel, an oscillatory member adapted to be moved varying amounts proportionate to the numbers to be set up, said member being provided at one of its edges at varying distances from its center of rotavtion with a plurality of Serrat-ions adapted to be engaged bythe operator to move the said member, and an operative connection between the said member and the saidwheel whereby the said Wheel will be shifted an aggregate amount proportionate to the summation of the varied movements of the said member.

ROBERT H. LITTLE. Titnesses I. J. IViLsoN, M. Itonnn'rsozv.

Washington, D. C. 

